Update src/mdx.py

src/mdx.py

@@ -274,14 +274,14 @@ def run_mdx(model_params, output_dir, model_path, filename, exclude_main=False,
 
     main_filepath = None
     if not exclude_main:
-        main_filepath = os.path.join(output_dir, f"{os.path.basename(os.path.splitext(filename)[0])}_{stem_name}{_stemname1}.wav")
+        main_filepath = os.path.join(output_dir, f"{os.path.basename(os.path.splitext(filename)[0])}_{stem_name}{_stemname1}.mp3")
         sf.write(main_filepath, wave_processed.T, sr)
 
     invert_filepath = None
     if not exclude_inversion:
         diff_stem_name = stem_naming.get(stem_name) if invert_suffix is None else invert_suffix
         stem_name = f"{stem_name}_diff" if diff_stem_name is None else diff_stem_name
-        invert_filepath = os.path.join(output_dir, f"{os.path.basename(os.path.splitext(filename)[0])}_{stem_name}{_stemname2}.wav")
+        invert_filepath = os.path.join(output_dir, f"{os.path.basename(os.path.splitext(filename)[0])}_{stem_name}{_stemname2}.mp3")
         sf.write(invert_filepath, (-wave_processed.T * model.compensation) + wave.T, sr)
 
     if not keep_orig: